Passive speaker amplifier



FIG. 1 is a top perspective view of the passive speaker amplifier inaccordance with my invention;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 a bottom perspective view thereof.

The broken lines shown in FIG. 1 are for illustrative purposes only andform no part of the claimed design.

CLAIM The ornamental design for the passive speaker amplifier, as shownand described herein.